---
title: "Timeout for going to Socket closed state"
url: "https://maker.wiznet.io/forum/15115"
markdown_url: "https://maker.wiznet.io/forum/15115/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "Anusha"
created: "2024-01-11T05:30:19+09:00"
last_activity: "2024-01-11T10:19:05+09:00"
language: "en"
views: 119
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Timeout for going to Socket closed state

## Question

Asked by Anusha on 2024-01-11 in Ethernet Chips.

Hello team,

I was looking at the state diagram of Socket states in W6100 datasheet and I can see that there is a timeout for going from Socket Established to Socket Closed state. Could you please let me know what is the timeout value?

[![image](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/4/424289bb8390c81456bc48c6ef6706d2df7dc8c7.png) image859×605 120 KB](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/4/424289bb8390c81456bc48c6ef6706d2df7dc8c7.png)

Thanks,
Anusha

## Replies

### Reply 1 by Eugeny, 2024-01-11

Most probably it is related to any operation of the socket in established state which requires response from the remote node - on the picture `send` and `recv`, which require `ack` packet back. If this packet does not arrive in time (see RTR/RCR/KPALVTR and related registers and their descriptions) then socket is considered is dead and auto-close at W6100 side.

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Source: https://maker.wiznet.io/forum/15115